Vibe Coding with v0: Frontend Development Guide

Building a Frontend for a Pre-built Backend

Introduction

In this course, you will learn how to use v0 to rapidly build a modern web frontend using “vibe coding” techniques. You will be provided with a fully functional backend, and your task is to create a user-friendly interface that interacts with it.

Step 1: Accessing the Backend

First, you need to access the backend management page to understand the data structure and retrieve the necessary documentation.

1. Navigate to the backend login page: qn37.parami.ai/login.
2. Sign in using your provided credentials.

Backend Login Page

Step 2: Downloading API Documentation

To help v0 understand how to communicate with your backend, you need to provide it with the API documentation.

1. Once logged in, look for the Download API Docs for v0 button on your dashboard.
2. Click the button to download the documentation file.

Download API Docs

The downloaded file will be a Markdown (.md) file, typically named something like marketplace-api-groupXXXX.md.

Example Downloaded File

Step 3: Setting up v0

Now, head over to v0.dev to start building your frontend.

Important: Select the Right Model

To manage your usage budget effectively, ensure you are using the v0 Mini model instead of the default “v0 Max”.

1. Click on the model selector in the prompt area.
2. Select v0 Mini.

Select v0 Mini Model

Note

Your remaining credit is displayed in the top right corner (indicated by the blue box in the image above). A fresh account typically starts with $5.00 of credit. Using the Mini model helps conserve this budget.

Step 4: Integrating the Backend

Once you have built your initial frontend “vibe”, you need to integrate it with the backend using the API documentation you downloaded in Step 2.

1. In the follow-up prompt area, click the + button.
2. Select Upload from computer and choose your .md documentation file.

Upload API Docs via Feedback Prompt

Step 5: Connecting the API

With the documentation uploaded, instruct v0 to connect your frontend to the backend.

1. Write a prompt to perform the integration, such as: "Intigrate the frontend into the given backend".
2. Click the Send button to apply the changes.

Integrating the API

Step 6: Preview and Refine

v0 will generate a live preview of your application.

1. Webapp Preview (Blue Box): Review the generated UI in the main window to see how your application looks and behaves.
2. Follow-up and Suggestions (Green Box): If you need changes (e.g., “change the primary color to blue” or “add a search bar”), use this area to provide additional instructions.
3. Publish Button (Red Box): Once you are satisfied with the result, click the Publish button in the top right corner.

Preview and Refine

Step 7: Publishing Your Web App

To make your web app accessible to others, you need to publish it.

1. In the publish dialog, click Publish to Production.

Confirm Publish

Step 8: Accessing Your Live Site

Congratulations! Your web app is now live. v0 will provide you with a unique URL where your application is hosted.

Published App URL

You can now visit this URL to see your fully functional frontend in action!